[Fri.day] n [ME, fr. OE frigedaeg (akin to OHG friatag Friday), fr. (assumed) Frig Frigga + daeg day, prehistoric trans. of L dies Veneris Venus' day] (bef. 12c): the sixth day of the week -- Fri.days adv
FRIDAY
Meaning of FRIDAY in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012